Rs232 Telephone Connector (Bu1); Rs485 D-Sub Connector For Half-Duplex Operation (Profibus) - PEP Modular Computers Modular Computers RS485 User Manual

Chapter 2 SMART-BASE

2.5.5 RS232 Telephone Connector (BU1)

In order to meet the needs of widespread standards, the RS232 connector is
selected as a telephone connector, an 8-pin RJ12 telephone jack with full
MODEM support.
Pin Nr.
1
2
3
4
5
6
7
8
2.5.6 RS485 D-Sub Connector (BU2) for Half-Duplex Operation (Profibus)
Pin Nr. Signal
1 SHIELD
2 N/C
3 T/RxD +
4 CNTR +*
5 Aux. GND Auxiliary Ground
* optional, for full-duplex operation
March 12, 1996
Signal Description
DSR Data Set Ready
RTS Ready to Send
System GND System GND
TxD Transmit Line
RxD Receive Line
DCD Data Carrier Detect
CTS Clear to Send
DTR Data Terminal Ready
Description
Shield Isolation
Not Connected
Transmit / Receive Line
Control Line
9
6
©1996 PEP Modular Computers GmbH
SMART I/O User's Manual
Pin Nr. Signal
6 Aux. +5V Auxiliary +5V
7 N/C Not Connected
8 T/RxD - Transmit / Receive Line
9 CNTR -* Control Line
5
1
1 2 8
Description
Page 2 - 15
2